Real measurable benefit to ceramic bearings?Since my only experience is using ceramic bearings is in my bottom bracket, coasting is not a factor. In terms of noise, there was no difference, meaning there was no noise. Now riding, this is perhaps the arena where there was an ever so slight smoother feel and maybe pushing the pedals required the most minute degree of less effort. For me the difference was only felt when the pedals were under pressure...either attacking or climbing.

How can I tell what brand/make of bike I have?The actual named frame size is not important. Rather the dimensions of the frame are what matters. One company might call your bike a 17" model and a frame with the same top tube, stand over etc by another company is considered an 18"! Hope that makes sense! If you are happy with the fit, record the measurements and should you decide to get a new frame seek one out that mirrors those measurements. Most cyclists know their own measurements. As far as age goes...it really does not matter unless it is constantly breaking down. I am hearing you are itching to get a new rig!!

Jul20

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Why does my back tyre wear so much more quickly than the front?OMG...alright guess a detailed explanation is necessary!! As the rear tire reaches the point it where it needs to be replaced, typically the front tire is no longer offering peak handling. What I do is move the front tire to the rear and replace the front!! By doing this, I have found that I am able to get the absolute maximum miles out my rubber and still maintain optimal handling!! Rubber side down

Suggestions for progressive upgradation of bikeI agree w/Mac the only minor comment I would add is if you have money burning a whole in your pocket or ants in pants, only buy upgrades that will likely not be standard items on a new bike purchase. This way when you do decide to get a new rig, you can make it own by moving said parts over...BLING, BLING :)

Train cycling legs for a long walking trekIt is difficult to give you guidance without knowing the timing of the events. When is the trek and how soon afterwards is the ride? You mention the ride is the following week, but what is crucial is the number of days between said events. Please clarify.